

Unit 4: Add and Subtract negative numbers #1
Presentation
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
Nhan Dinh
FREE Resource
3 Slides • 16 Questions
1
First find a common denominator by listing some multiples of 3 and 4
Multiples of 4: 4,8,12,16,20,24...
Multiples of 3: 3,6,9,12,15,18,21...
As you can see, number 12 repeats on both lists, so we choose number 12 as the common denominator
Make equivalent fractions so 12 is the new denominator.
Add the new fractions together (numerators only)
2
First find a common denominator by listing some multiples of 2 and 3
Multiples of 2: 2,4,6,8,10,12...
Multiples of 3: 3,6,9,12,15,18,21...
As you can see, number 6 and number 12 repeat on both lists, but we only choose the smallest one as the common denominator
Next, change both fractions to 6ths using equivalent fractions.
Finally, add the new fractions together (remember to only add the numerators).
3
Subtracting Fractions works the same as adding...
Find a common denominator.
Make equivalent fractions.
Add the new numerators.
4
Multiple Choice
5
Multiple Choice
Positive + Negative = ??
Positive
Negative
It Depends on which has a greater absolute value
6
Multiple Choice
negative + Negative = ??
Positive
Negative
It Depends
7
Multiple Choice
8
Multiple Choice
32−21=
73
61
51
67
9
Multiple Choice
52−103=
107
101
51
151
10
Multiple Choice
31+125=
126
156
129
44
11
Multiple Choice
53+41=
205
2012
207
2017
12
Multiple Choice
42−83=
81
45
324
21
13
Multiple Choice
The Gill family ordered a large pizza. Kyle ate 1/8 of the pizza, Scott ate 2/8 of the pizza, and Missy ate 3/8 of the pizza. How much of the pizza was left?
Hint: The whole pizza was 8/8.
88
86
83
82
14
Multiple Choice
31+61=
64
65
21
32
15
Multiple Choice
−103−(−52)
−101
101
107
−107
16
Multiple Choice
−73+54
5543
−3513
−5543
3513
17
Multiple Choice
94+(−32)
1 91
−1 91
92
−92
18
Multiple Choice
42+(−45)
−47
43
−43
−87
19
Multiple Choice
−1211−(−125)
−21
21
16
241
First find a common denominator by listing some multiples of 3 and 4
Multiples of 4: 4,8,12,16,20,24...
Multiples of 3: 3,6,9,12,15,18,21...
As you can see, number 12 repeats on both lists, so we choose number 12 as the common denominator
Make equivalent fractions so 12 is the new denominator.
Add the new fractions together (numerators only)
Show answer
Auto Play
Slide 1 / 19
SLIDE
Similar Resources on Wayground
18 questions
Multiply Rational Numbers
Presentation
•
7th Grade
14 questions
7.RP.1: Unit Rates w/Complex Fractions
Presentation
•
7th Grade
15 questions
multiplication of fractions
Presentation
•
6th Grade
13 questions
Finding the percent of a number
Presentation
•
6th Grade
15 questions
One Step Equation Word Problems (M/D)
Presentation
•
7th Grade
15 questions
TEKS 7.4B Review
Presentation
•
7th Grade
18 questions
Rational Numbers
Presentation
•
7th Grade
18 questions
Combining Like Terms
Presentation
•
7th Grade
Popular Resources on Wayground
24 questions
PBIS-HGMS Day 10
Quiz
•
6th - 8th Grade
10 questions
HCS SCI 03 Summer School Review 3
Quiz
•
3rd Grade
11 questions
Home Scope
Quiz
•
7th - 8th Grade
15 questions
HCS SCI 05 Summer School Assessment 3 Review
Quiz
•
5th Grade
35 questions
Lufkin Road Middle School Student Handbook & Policies Assessment
Quiz
•
7th Grade
18 questions
Geo 11.3 Area of Circles and Sectors
Quiz
•
9th - 11th Grade